[Bug 472506] Re: No DRM, high cpu usage by X on rendering and frequent X crashes on Intel(R) G45/G43 Integrated Graphics Chipset

[Konstantinos Togias]

I just resolved this issue. The whole problem was caused by bios
setting. There is a "Protect Audio Video Path Mode" option under chipset
configuration. It was set at "Paranoid" and that was the cause of the
problem. When that bios setting is set to "Disabled" or "Lite" the
problem does not appear. Mesa DRI Intel(R) G45/G43 GEM 20090712 2009Q2
RC3 is successfully initialized, no erros or warnings at logs and the
performance is perfect. See "What is PAVP (Protected Audio Video Path)?"
paragraph at http://www.intel.com/support/graphics/sb/CS-029871.htm for
more info about this option.

So the fix to this issue is this:

* Reboot the pc
* Press DEL to enter bios setup
* Go to Advanced -> Chipset -> Northbridge and locate the option "Protect Audio Video Path Mode"
* Set it to "Disabled" or "Light"
* Save changes and boot.

Can anyone more familiar with this bios options tell us what is the
recommended setting for ubunutu? Disabled or Light (or maybe there is no
difference).

** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: New => Invalid

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No DRM, high cpu usage by X on rendering and frequent X crashes on Intel(R) G45/G43 Integrated Graphics Chipset 
https://bugs.launchpad.net/bugs/472506
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